ziggy is my first puppy (and dog of my own actually) he is about 6 months and is completely trained now. he holds it even overnight for about a month now. i started out crate training him when i bought him home (at 3mos) & put that crate away for good a couple months ago. he lasts overnight and holds it completely until we get outside in the morning. i honestly feel like it wasnt so hard, but he did have some bad accidents and yes some false alarms, lol. But hes been one month+ now with no accidents.
so as a first timer (not a dog training guru at all) i say its def. possible, and im seeing a lot about yorkies being hard to potty train but, i think mine is very smart personally - he gets it
... or wait is a couple months too soon to start dancing ..?